/Engine/Source/Runtime/Core/Public/GenericPlatform/GenericPlatformMisc.h
Enumerates supported message dialog button types.
namespace EAppMsgType { enum Type { Ok, YesNo, OkCancel, YesNoCancel, CancelRetryContinue, YesNoYesAllNoAll, YesNoYesAllNoAllCancel, YesNoYesAll, } }